[PATCH] nl80211: ignore the length of hide ssid is zero in scan

[samirweng1979]

From: wengjianfeng <wengjianfeng@xxxxxxxxxx>

If the length of hide ssid is zero in scan, don't pass
it to driver, which doesn't make any sense.

Signed-off-by: wengjianfeng <wengjianfeng@xxxxxxxxxx>
---
 net/wireless/nl80211.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 775d0c4..d62e2aa 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -8727,6 +8727,9 @@ static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info)
 				err = -EINVAL;
 				goto out_free;
 			}
+			/* ignore the length of hide ssid is zero */
+			if (nla_len(attr) == 0)
+				continue;
 			request->ssids[i].ssid_len = nla_len(attr);
 			memcpy(request->ssids[i].ssid, nla_data(attr),
 			       nla_len(attr));
-- 
1.9.1